Index: devel/qt5-core/files/patch-src_corelib_io_qlockfile__unix.cpp
===================================================================
--- /dev/null
+++ devel/qt5-core/files/patch-src_corelib_io_qlockfile__unix.cpp
@@ -0,0 +1,62 @@
+--- src/corelib/io/qlockfile_unix.cpp.orig      2018-06-06 09:26:40 UTC
++++ src/corelib/io/qlockfile_unix.cpp
+@@ -75,6 +75,8 @@
+ #   include <sys/sysctl.h>
+ # if !defined(Q_OS_NETBSD)
+ #   include <sys/user.h>
++#   include <kvm.h>
++#   include <libprocstat.h>
+ # endif
+ #endif
+ 
+@@ -246,23 +248,43 @@ QString QLockFilePrivate::processNameByPid(qint64 pid)
+     struct kinfo_proc kp;
+     int mib[6] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, (int)pid, sizeof(struct kinfo_proc), 1 };
+ # else
++    kvm_t * kvm = kvm_open(nullptr, "/dev/null", nullptr, O_RDONLY, "");
++    int cnt;
++    struct kinfo_proc * kvm_kp = kvm_getprocs(kvm, KERN_PROC_PID, getpid(), &cnt);
++    struct procstat * ps = procstat_open_sysctl();
++    char ** argv = procstat_getargv(ps, kvm_kp, 0);
++    QString nameFromProcstat;
++    if (argv != nullptr && argv[0] != nullptr)
++        nameFromProcstat = QString::fromLocal8Bit(argv[0]);
++    procstat_close(ps);
++    kvm_close(kvm);
++
+     struct kinfo_proc kp;
+     int mib[4] = { CTL_KERN, KERN_PROC, KERN_PROC_PID, (int)pid };
+ # endif
+-    size_t len = sizeof(kp);
+-    u_int mib_len = sizeof(mib)/sizeof(u_int);
++    if (nameFromProcstat.isEmpty())
++    {
++        size_t len = sizeof(kp);
++        u_int mib_len = sizeof(mib)/sizeof(u_int);
+ 
+-    if (sysctl(mib, mib_len, &kp, &len, NULL, 0) < 0)
+-        return QString();
+-
++        if (sysctl(mib, mib_len, &kp, &len, NULL, 0) < 0)
++            return QString();
++    }
+ # if defined(Q_OS_OPENBSD) || defined(Q_OS_NETBSD)
+     if (kp.p_pid != pid)
+         return QString();
+     QString name = QFile::decodeName(kp.p_comm);
+ # else
+-    if (kp.ki_pid != pid)
++    QString name;
++    if (!nameFromProcstat.isEmpty())
++    {
++        QFileInfo fi(nameFromProcstat);
++        name = fi.fileName();
++    }
++    else if (kp.ki_pid != pid)
+         return QString();
+-    QString name = QFile::decodeName(kp.ki_comm);
++    else
++        QString name = QFile::decodeName(kp.ki_comm);
+ # endif
+     return name;
+ 
\ No newline at end of file